Crane.



PATBNTBD JULY 21, 1903.

A. P. VAN TUYL.

CRANE.

APPLICATION FILED mm: 19,, new,

2 SHEETS-SHEET 1 N0 MODEL.

WITNESSES A TTOHN E YS PATENTED JULY 21, 1903.

A. P. VAN TUYL.

CRANE. APPLICATION PI'LED'JURB 19, 1901.

2 SHEETS-SHEET 2.

N0 MODEL.

m T N E V m WITNESSES M 2 W y THE-bums PETER: m. momumo" wAsl-amarou. n.cy

we. 734,0i9.

UNITED STATES ANDREW P. VAN TUYL, OF BRO LYN,

Patented July 21, 1903.

PATENT OFFICE.

NEW YORK, ASSIGNOR OF ONE- V CRANE.

sirnctnrcazrion rermin part of Letters Patent No. 734,019, dated Jul 21,1903.

Application filed June 19, 1901.

To all whom it may concern: I

Be it known that I, ANDREW P. VAN TUYL, a citizen of the United States,and a resident of the city of New York, borough ofBrook lyn,in thecounty of Kings and State of New York, have invented anew and ImprovedCrane, of which the following is a full, clear, and exact description.

The invention relates to cranes, and has for its object to produce aself-supporting crane. provided with a Windlass or rope-pulleyattachment for hoisting or lowering articles of moderate Weightsperpendicularly or at an incline -as, for example, out of or into awellhole, cellar, or stairway.

.A further object of the invention is to provide an improved method ofarrestingv the outward swing of the hinged supportingframes of anyself-supporting crane and securing the same at a fixed angle of supportwhen in use, as well as to, fold in compactly on the supporting-frameswhen the latter are closed and the crane is not in use.

Another purpose of the invention is to provide an improvedholdfast-catch for a self-supporting crane to compactly hold theloosehinged supporting-frames close to the main frame of the crane whenthe crane is not in use, as well as to quickly release the holdfastcatchaforesaid when the crane is required for use.

The invention consists in the novel construction and combination of theseveral parts, as will be hereinafter fully' set forth, and pointed outin the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a side elevation of the improved crane in a position toraise a weight perpendicularly. Fig. 2 is also a side elevation of theimproved crane,illustrating it in position for hoisting a weight at anincline or stairway. Fig. 3 is a side elevation of the crane folded.Fig. 4 is a rear elevation of the folded crane. Fig. 5 is an enlargedhorizontal section through a portion of the crane, illustrating theholdfast-catch for holding the primary and secondary sections of thesupporting-frame close to the main frame; and

Serial No. 65,154. (No model.)

Fig. 6 is an inner face view of a part of a side bar of the maincarrying-frame, alsodrawn upon an enlarged scale and illustrating thecheck for the Windlass and the manner in which the Windlass issupported.

The crane comprises the main frame A and the supporting frame B, made intwo sec tions-namely, a long section Z2 and a shorter section beitherofwhich sections may be brought into use, according to whether the craneis to be held in a position for ordinary use or for raisinga weightperpendicularly or whether the crane is to be placed at an inclinationwhich would enable an improved hoisting device carried by the crane toraise a weight from a stairway or an inclined plane, as shown in Fig. 2.

The main frame A is preferably made in the form of a ladder, as shown inthe drawings, wherein 10 represents the side bars, 11 the steps, and 12a top step or platform, having the ordinary side pieces,so that the saidframe, with its supporting-frame, also forms a stepladder. Through theside pieces of the step orplatform 12 a rod or bar 13 is passed. Theupper ends of the'members of the longer or primary section b of .thesupporting-frame B are pivoted or hinged on the said bar 13, as arelikewise the side members of the shorter or secondary section of thesaid supportingframe. The secondary or shorter section of thesupporting-frame is adaptedto lie within or between the side members ofthe primary 'sectionof said supporting-frame, as is shown in Fig. 4.Preferably the rod 13, carried by the platform 12, passes through guides14, Se cured to the under face of the said platform, as shown in Fig. 4,and between these guides a pulley 15 is connected with the said rod 13,as is also best shown in Fig. 4. Thesecond'ary section of thesupporting-frameB isprevented from dropping 'too far betweenthesidemembers of the primarysection by attaching crossbars 16 and 17 tothe rear face of the side members of the secondary frame, whichcross-bars are of sufficient length to engage with the correspondingfaces of the primary section of the said supporting-frame. Crossedbraces 18 extend from the cross-bar 16 to the cross-bar 17 formingthereby a guideway 19, as is shown in Figs. 1, 2, and 3. A check-rod 20,substantially U-shaped, is employed to limit the movement of thesupporting-frame relative to the step-frame, and the bow-section of thischeck-rod is passed through the guideway 19 of the secondary section ofthe supportingframe, and the ends of the check-rod are attached to theouter faces of the side members of the step-frame A by means of suitablepins 21. The side members of the primary section of the supporting-frameB are provided with toothed extensions 22, and when the two sections ofthe supporting-frame are brought together and are moved together, whichis the case when the crane is to be placed in practically an uprightposition, as shown in Fig. 1, the bow portion of the check-rod 20 willengage with these tooth projections 22, as shown in Fig. 1, thus holdingthe two frames of the crane in a position to steady the same, enablingthe steps to be safely used or a weight to be raised perpendicularly, aswill be hereinafter described. When the crane is to be placed over astairway, however, or over an inclined plane to raise a weight in aninclined position, as shown in Fig. 2, the primary section of thesupporting-frame is folded close to the step-section of the frame, andthe rear portion of the crane is supported by the secondary section ofthe said supporting-frame. In this event the supporting and the mainframe are held separated by the check-rod, which will have traveled atits bow-section to the upper section of the guideway 19, as is shown inFig. 2. The check-rod 20 can be readily sprung past the toothedprojections 22 when necessary. The members of the primary section of thesupporting-frame B are connected by suitable cross-bars 12.

Journal-bearing plates 23 are attached in any suitable or approvedmanner to the inner faces of the side members of the front frame A,extending rearwardly beyond said members, and in therearwardly-extending portions of these journal-bearing plates thetrunnions of a winding rolleror drum 24 are mounted to turn. One of saidtrunnions is fitted to receive acrank-arm 25, whereby the said roller ordrum may be readily turned, and this crank-arm may be made detachablefrom the said trunnion and when not in use placed in a receptacle whichmay be provided beneath the platform 12.

At one end of the drum or winding-roller 24 projecting lugs 26 areformed, and these projecting lugs are adapted to be engaged by a pawl27, fulcrumed upon one of the journalbearing plates 23, as shown in Fig.6. The pawl is provided with a forwardly-extending tailpiece 28, andthis tailpiece is adapted to engage with the projection from ahunch-back spring 29, which is shown in Fig. 6. When the pawl is inposition to engage with the lugs upon the drum or winding-roller 24, asshown in positive lines in Fig. 6, the tailpiece of the pawl engageswith the upper portion of the. projection from the said spring 29, andwhen the pawl is carried out of the path of the lugs of the windingroller or drum 24, as is shown in dotted lines in Fig. 6, thetail-section of the said pawl engages with the lower portion of theprojection from the spring 29. In order that the pawl 27 may be quicklyand conveniently operated, a handle 30 is provided for said pawl, whichhandle is in the nature of a hand-lever. Thus it will be observed thatby the manipulation of this hand-lever 30, which is free at its outerend, the pawl 27 may be carried out of the path of the projections orlugs 26 upon the winding shaft or drum or be brought in such position asto engage with such lugs, thus enabling a person to have convenient andready control of the windingdrum under all conditions of use. A cable,rope, or chain 31 is attached to the winding roller or drum and isadapted to be wound thereon. This cable, rope, or chain is passed overthe pulley 15, the other end of the cable being provided with means forattachment to a weight or article 32 to be lifted.

The two frames may be held locked together through the medium of thecatch shown in I Fig. 5. This catch consists of a member 33, which issecured to the outer side face of the side member of the step-frame A ofthe crane and extends rearwardly beyond said member, being provided atits rear end with a preferably semicircular head 35, and a second memberof the latch is attached to the outer portion of a side member of theprimary section of the supporting-frame B, and this section of the latchextends forwardly beyond said member and is then carried inward and thenhorizontally forward parallel with the extended portion of thelatch-section 33, and the forwardly-extending part 34 of thelatch-section is provided with a semicircular head or enlargement 36 onits outer face. When the two enlargements 35 and 36 of thelatch-sections are brought together, a locking contact is effectedbetween the two sections of the spring, which locking contact may bereadily broken by quickly pulling one frame away from the other. Thelatch-section 34,attached to the primary section of the supporting-frameB, is carried in a bow-spring 38 over the inner face of the member ofthe primary section, as is shown in Fig. 5, to be engaged by a secondspring 39, attached to the corresponding member of the secondary sectionof the supporting-frame, and when these two parts 38 and 39 are broughttogether the secondary and primary sections of the supporting-frame willbe held locked together, although one section may be readily separatedfrom the other when desired.

It will be observed that a crane constructed as above set forth, inaddition to being employed for lifting weights either perpendicularly orat an inclination, may be used-as a step-ladder, and it will also beobserved that when the supporting-frame is carried toward and is securedto the main frame A the checkrod will automatically follow the movementof the supporting-frame and in the folded po- ICC IIO

sition of the two frames will lie fiat and out of the way, but willalways be ready to support the two frames or either section of thesupporting-frame when the ladder is set up for use or for hoistingpurposes.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. A crane, comprising a main frame, asupporting-frame formed of two' sections of unequal length and eachhinged to the main frame, a pulley at the top of the main frame, and aWindlass mounted upon the main frame intermediate of its ends, as setforth.

2. Acrane, comprising a main frame,a supporting-frame formed of twosections of unequal length and each hinged to the main frame, anadjustable connection between the main and supporting frames, a pulleyat the top of the main frame, and a Windlass mounted on the main frameintermediate the ends thereof, as set forth.

3. A crane, comprising a main frame having a platform at its upper endfrom which a pulley is suspended and provided with a windlass mounted onits side bars, and a supporting-frame formed of two sections of unequallength, ,and each hinged to the platform of the main frame, as setforth.

4. A crane, comprising a main frame having a platform at its upper endfrom which a pulley is suspended and provided with a windlass on itsside bars, and a supporting-frame formed of two sections of unequallength and fitting one within the other, the said sections being hingedto the platform of the main frame on a common pivot, as set forth.

5. In a crane, a main frame provided with a platform at its upper end,said platform being provided with a rod or bar extending from its sidepieces and with guides on its under surface through which the rod or barpasses,

a supporting-frame hinged on the rod of the platform, a pulley suspendedfrom the said rod or bar, a Windlass mounted on the side bars of themain frame, and a rope or chain secured to the Windlass and passing overthe said pulley, as set forth.

6. In a crane, a Windlass comprisinga Winding-drum mounted to turn onone frame of the ladder, the said winding-drum being provided withperipheral spurs, a spring-controlled pawl adapted for engagement withsaid spurs of the winding-drum, a spring having a fixed and a freemember and an extension from its free member, and an extension from thepawl which engages with the extension from said spring, as described.

7. In a crane, a main frame, a supportingframe formed of sections ofunequal length pivoted to the main frame, the shorter section beingadapted to lie within the longer section and provided with a guideway,and a rod pivoted to the main frame and working in the guideway of theshorter section of the supporting-frame, as set forth.

8. In a crane, a main frame, a supportingframe formed of sectionsofunequal length pivoted to the main frame on a common pivot, the shortersection being adapted to lie within the longer section and provided witha guideway, the longer section being provided with toothed extensions,and a U-shaped rod pivoted to the main frame andworking in the guidewayof the shorter section of the supporting-frame, as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing Witnesses.

ANDREW P. VAN TUYL.

Witnesses:

J. FRED. ACKER, JNo. M. BITTER.

